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package com.journey.common;
import java.security.MessageDigest;
/**
 *
 * @author Administrator
 */
public class Encoder {
    
    public final static String encode(String s) {
	char hexDigits[] = {
	        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
	        'e', 'f'};
	        try {
	        byte[] strTemp = s.getBytes();
	        MessageDigest mdTemp = MessageDigest.getInstance("MD5");
	        mdTemp.update(strTemp);
	        byte[] md = mdTemp.digest();
	        int j = md.length;
	        char str[] = new char[j * 2];
	        int k = 0;
	        for (int i = 0; i < j; i++) {
	        byte byte0 = md[i];
	          str[k++] = hexDigits[byte0 >>> 4 & 0xf];
	          str[k++] = hexDigits[byte0 & 0xf];
	        }
	        return new String(str);
	      }
	      catch (Exception e) {
	        return null;
	      }
	  }

}
